Nikon Expected to Announce New 800mm Lens, the Longest in Lineup

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Based on some patents filed by Nikon, the company is expected to announce an updated 800mm lens, which will be the largest lens in the current lineup, according to Nikon Rumors. As of now, the 600mm f/4G ED VR is the longest lens Nikon is offering, though Sigma and Canon both have 800mm f/5.6 lenses in their lineups.
The previous Nikon 800mm f/5.6 IF ED was released in 1986 and discontinued in 2005.